Add option to override minor version

Pass the minor version override to delta_generator. So we can test
features in tradefed before releasing it to droidfoods.

Bug: 197361113
Test: TH
Change-Id: Ie8846935dfa13784f0745513be13811908f44ac3

tools/releasetools/ota_from_target_files.py

@@ -225,6 +225,8 @@ A/B OTA specific options
   --enable_vabc_xor
       Enable the VABC xor feature. Will reduce space requirements for OTA
 
+  --force_minor_version
+      Override the update_engine minor version for delta generation.
 """
 
 from __future__ import print_function
@@ -291,6 +293,7 @@ OPTIONS.disable_vabc = False
 OPTIONS.spl_downgrade = False
 OPTIONS.vabc_downgrade = False
 OPTIONS.enable_vabc_xor = True
+OPTIONS.force_minor_version = None
 
 POSTINSTALL_CONFIG = 'META/postinstall_config.txt'
 DYNAMIC_PARTITION_INFO = 'META/dynamic_partitions_info.txt'
@@ -1144,6 +1147,8 @@ def GenerateAbOtaPackage(target_file, output_file, source_file=None):
     additional_args += ["--disable_vabc", "true"]
   if OPTIONS.enable_vabc_xor:
     additional_args += ["--enable_vabc_xor", "true"]
+  if OPTIONS.force_minor_version:
+    additional_args += ["--force_minor_version", OPTIONS.force_minor_version]
   additional_args += ["--max_timestamp", max_timestamp]
 
   if SupportsMainlineGkiUpdates(source_file):
@@ -1317,6 +1322,8 @@ def main(argv):
       OPTIONS.vabc_downgrade = True
     elif o == "--enable_vabc_xor":
       OPTIONS.enable_vabc_xor = a.lower() != "false"
+    elif o == "--force_minor_version":
+      OPTIONS.force_minor_version = a
     else:
       return False
     return True
@@ -1362,6 +1369,7 @@ def main(argv):
                                  "spl_downgrade",
                                  "vabc_downgrade",
                                  "enable_vabc_xor=",
+                                 "force_minor_version=",
                              ], extra_option_handler=option_handler)
 
   if len(args) != 2: